1, support USB1.1 or USB2.0 communication. 2, support WIN98, WINME, WIN2K, WINXP operation system. 3. USB ports Power Supply, power supply output is 500 MA since the recovery, which can effectively prevent outside of USB influence short circuit, target board can supply with USB together. 4, download not finish influence the operation of the target board. 5, support S51 and AVR chips record, speed faster than parallel ISP, more stable; There is no parallel notebook computer and use the best choice. 6, the latest version of exceed stable firmware, download speed jump line without choice, download speed faster, more stable. 7, using standard IDC10 interface